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TCEQ to retire Drinking Water Watch, move labs to CMDP and expand Drinking Water Viewer features

Texas Commission on Environmental Quality (TCEQ) · November 6, 2025

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Summary

TCEQ said it will decommission Drinking Water Watch and the CCR generator at year-end and move laboratories to the Compliance Monitoring Data Portal (CMDP) in November 2025; Drinking Water Viewer will replace legacy interfaces and add accessibility, CCR templates, sample-site visibility, and data-export functions.

TCEQ staff told the Drinking Water Advisory Work Group on Oct. 14 that the agency will retire Drinking Water Watch and the CCR generator at the end of the year and transition laboratory reporting into the Compliance Monitoring Data Portal (CMDP) by November 2025.

Ryland Fields and Laura Higgins demonstrated the Drinking Water Viewer and said the Viewer has been reorganized to comply with federal web-content accessibility guidelines (screen-reader compatibility). Staff said laboratories should be fully transitioned to CMDP in November and that, to date, no lab had told TCEQ it would miss that timeline.

Drinking Water Viewer will host draft CCR templates and offer pre-generated CCRs for systems that have not completed CCRs for the year, Ryland said. The Viewer also displays preapproved lead-and-copper sample sites and provides downloadable tables of samples by analyte and by system; staff acknowledged export and pagination issues and said contractor fixes are in progress.

Operators raised usability questions: back-button behavior that resets search fields, slow list pagination for large result sets, and limitations on bulk exports for systems with many sample points. TCEQ said the contractor will address the back-button behavior and streamline bulk-export and download processes; viewers currently show legacy results pulled from the same source as Drinking Water Watch.

Laura Higgins cautioned that CMDP enforcement of preapproved sample-site requirements will be stricter going forward: during monitoring periods, CMDP may reject sample submissions that do not come from preapproved sites. She encouraged systems to verify preapproved sampling sites in Drinking Water Viewer to avoid rejected data.

Evidence in the record: presenters noted the Viewer’s accessibility work, the retirement of legacy tools at year-end, the November CMDP transition target for labs, and the immediate availability of lead-and-copper sample-site mapping on the Viewer.